How to select a low-sulfur feed gas shift catalyst
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Our company’s coal gasification unit employs pressurized coal slurry gasification technology, with a design pressure of 6.5 Mpa. Due to the low sulfur content in the raw coal, the sulfur content in the syngas is 600 mg/m³. If a sulfur-resistant shift reactor is used, catalyst desulfidation may occur; therefore, we seek advice from our colleagues and experienced professionals regarding which catalyst should be chosen.
A low water vapor ratio catalyst from Qingdao Lianxin is used. We chose this catalyst precisely because of its low sulfur content; it is very energy-efficient. Currently, only Liuhua is in use domestically. Leadership with courage is needed, and the design institute must be willing to take responsibility before it will be adopted – after all, it is new technology.
Current sulfur-resistant shift catalysts have been improved; it is said that titanium oxide is added to them, as it helps to concentrate hydrogen sulfide. As a result, most manufacturers claim that these catalysts can be used in conditions with low sulfur levels, as long as the hydrogen sulfide concentration is above 200 ppm